"西安交通大学电力电子与新能源技术研究中心：交流电力控制与变频技术综述"。

The PowerPoint presentation from the Xi'an Jiaotong University Research Center for Power Electronics and New Energy Technology introduces various aspects of AC power control circuits and AC inverter circuits. It covers topics such as single-phase and three-phase AC voltage regulation circuits, as well as other AC power control circuits like AC power regulation circuits and AC power electronic switches. The presentation also delves into AC-AC converter circuits, including single-phase and three-phase AC-AC converter circuits, and matrix-type frequency converter circuits. In the overview section, it explains that AC-AC converter circuits are designed to convert one form of AC power into another, allowing for the adjustment of voltage, current, frequency, and phase number. It distinguishes between AC power control circuits that only alter voltage, current, or circuit control without changing the frequency. The presentation further explains AC voltage regulation circuits using phase control (or chopping control) as discussed in section 4.1, and AC power regulation circuits and AC non-contact switches using on-off control as discussed in section 4.2. Overall, the presentation provides a comprehensive overview of AC power control and AC inverter circuits, showcasing the various technologies and techniques used in these circuits to efficiently manage and regulate AC power for different applications. This information is valuable for researchers, engineers, and students interested in the field of power electronics and new energy technologies.